Question

PLEASE HELP AND SHOW WORK

Answer 1

Yes he is correct so is his explanation 7.5

Answer 2

7.5

Explanation:

If we look at the 4 by 4 square around the triangle we can just do the area of the square minus the area of the 3 little triangles which is:

4 * 4 - 4 * 1 / 2 - 3 * 3 / 2 - 4 * 1 / 2

= 16 - 2 - 4.5 - 2

= 16 - 8.5

= 7.5